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Ultralight 30°F/-1°C Going Ultralight doesn't have to mean suffering. We'd rather find a way to shave the weight and innovate on performance, like using Flex technology for our Nitro 30. We build in Flex between the shoulders and knees, so you get the comfort and thermal benefits, while saving precious ounces. Foot Box Venting lets you customize the climate in the lower half of your Nitro, without adding the weight of a full-length zipper. Ultralight speed with full-featured comfort.
Technology
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GOOSE DOWN FILL : THERMAL INSULATION
Down is considered to be the single-most warmest insulating material ever found on Earth. Down quality is measured by placing 1 oz. of goose down into a graduated cylindrical tube & measuring the
volume that the down material condenses down to (in cubic inches).
The "number" of fill power for each down material corresponds to the end results of condensing the goose down feathers in a cylindrical tube measured in cubic inches; as the number of
fill-power number goes up, so does the quality, loft, and condensability of the down material itself.
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Goose Down Fill: 800-Fill
800-Fill Goose Down is warm, durable, lightweight, and extremely compressible. Offering exceptional warmth while allowing maximum compatibility, 800-fill is considered to be one of the highest-
quality insulating materials used in the world today. Ideal for use by outdoor enthusiasts, for prolonged outings in frigid environments, and even for survival.
Benefits
Exceptional Warmth and Comfort
Lightweight Insulation
High Quality Goose Down
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